Home / 28,961.90-43,360.93-18,405.74

Finding the Fourth Proportional to 28,961.90, 43,360.93 and 18,405.74

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Solution

The fourth proportional to 28,961.90, 43,360.93 and 18,405.74 is: 27,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.90 : 43,360.93 = 18,405.74 : x
  2. Step 2: Convert to fraction form
    28,961.90/43,360.93 = 18,405.74/x
  3. Step 3: Cross multiply
    28,961.90x = 43,360.93 × 18,405.74
  4. Step 4: Simplify right side
    28,961.90x = 798,089,911.71
  5. Step 5: Solve for x
    x = 798,089,911.71/28,961.90
  6. Step 6: Final answer
    x = 27,556.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.